I run a company, a tech company, and I actually insist that most passwords be easily sent to clients in plain text.
I'm not talking about credit card information, obviously, nor control of any nuclear facilities. We're usually talking about invoices, business-administrative panels, business reports, and even financial reports. And, believe it or not, even e-mail passwords.
It's certainly not more secure. Especially those last two.
But I drive very fast on highways with other cars driving very fast, and the only thing separating us from 50-car pile-ups and massive death is a yellow line of paint.
In all of these cases, no one dies, and no one directly loses large sums of money.
But it's more than just convenience alone. It's business. Business often comes down to service. And when a client forgets their password, nothing beats just telling them. Yes, telephone's a little bit better, but not always the better business solution.
In the end, you know something, it's up to the person paying the bills. If my client doesn't care about the security risk, then I'm not the one to force them onto the long road.
The front door to my house has a lock that is easily picked -- which doesn't matter because right next to the door. . . is a window. I don't want bars on my windows either.